/*
 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Contributors:
 *     Nuxeo - initial API and implementation
 *
 * $Id$
 */

package org.nuxeo.ecm.webengine.servlet;

import javax.servlet.http.HttpServletResponse;

/**
 * HTTP constants.
 *
 * @author <a href="mailto:td@nuxeo.com">Thierry Delprat</a>
 */
// TODO: is this needed? Only one constant is actually used (MULTIPART)
public class WebConst {

    /**
     * Part of HTTP content type header.
     */
    public static final String MULTIPART = "multipart/";

    public static final String ACTION_SEPARATOR = "@@";

    public static final String MODE_KEY = "render_mode";

    public static final String ENGINE_KEY = "render_engine";

    public static final String VIEW_MODE = "VIEW";

    public static final String EDIT_MODE = "EDIT";

    public static final String CREATE_MODE = "CREATE";

    public static final String METHOD_HEAD = "HEAD";

    public static final String METHOD_COPY = "COPY";

    public static final String METHOD_MOVE = "MOVE";

    public static final String METHOD_LOCK = "LOCK";

    public static final String METHOD_UNLOCK = "UNLOCK";

    public static final String METHOD_PUT = "PUT";

    public static final String METHOD_POST = "POST";

    public static final String METHOD_GET = "GET";

    public static final String METHOD_DELETE = "DELETE";

    public static final String METHOD_OPTIONS = "OPTIONS";

    /**
     * Status code (200) indicating the request succeeded normally.
     */
    public static final int SC_OK = HttpServletResponse.SC_OK;

    /**
     * Status code (201) indicating the request succeeded and created a new resource on the server.
     */
    public static final int SC_CREATED = HttpServletResponse.SC_CREATED;

    /**
     * Status code (202) indicating that a request was accepted for processing, but was not completed.
     */
    public static final int SC_ACCEPTED = HttpServletResponse.SC_ACCEPTED;

    /**
     * Status code (204) indicating that the request succeeded but that there was no new information to return.
     */
    public static final int SC_NO_CONTENT = HttpServletResponse.SC_NO_CONTENT;

    /**
     * Status code (301) indicating that the resource has permanently moved to a new location, and that future
     * references should use a new URI with their requests.
     */
    public static final int SC_MOVED_PERMANENTLY = HttpServletResponse.SC_MOVED_PERMANENTLY;

    /**
     * Status code (302) indicating that the resource has temporarily moved to another location, but that future
     * references should still use the original URI to access the resource.
     */
    public static final int SC_MOVED_TEMPORARILY = HttpServletResponse.SC_MOVED_TEMPORARILY;

    /**
     * Status code (304) indicating that a conditional GET operation found that the resource was available and not
     * modified.
     */
    public static final int SC_NOT_MODIFIED = HttpServletResponse.SC_NOT_MODIFIED;

    /**
     * Status code (400) indicating the request sent by the client was syntactically incorrect.
     */
    public static final int SC_BAD_REQUEST = HttpServletResponse.SC_BAD_REQUEST;

    /**
     * Status code (401) indicating that the request requires HTTP authentication.
     */
    public static final int SC_UNAUTHORIZED = HttpServletResponse.SC_UNAUTHORIZED;

    /**
     * Status code (403) indicating the server understood the request but refused to fulfill it.
     */
    public static final int SC_FORBIDDEN = HttpServletResponse.SC_FORBIDDEN;

    /**
     * Status code (404) indicating that the requested resource is not available.
     */
    public static final int SC_NOT_FOUND = HttpServletResponse.SC_NOT_FOUND;

    /**
     * Status code (500) indicating an error inside the HTTP service which prevented it from fulfilling the request.
     */
    public static final int SC_INTERNAL_SERVER_ERROR = HttpServletResponse.SC_INTERNAL_SERVER_ERROR;

    /**
     * Status code (501) indicating the HTTP service does not support the functionality needed to fulfill the request.
     */
    public static final int SC_NOT_IMPLEMENTED = HttpServletResponse.SC_NOT_IMPLEMENTED;

    /**
     * Status code (502) indicating that the HTTP server received an invalid response from a server it consulted when
     * acting as a proxy or gateway.
     */
    public static final int SC_BAD_GATEWAY = HttpServletResponse.SC_BAD_GATEWAY;

    /**
     * Status code (503) indicating that the HTTP service is temporarily overloaded, and unable to handle the request.
     */
    public static final int SC_SERVICE_UNAVAILABLE = HttpServletResponse.SC_SERVICE_UNAVAILABLE;

    /**
     * Status code (100) indicating the client may continue with its request. This interim response is used to inform
     * the client that the initial part of the request has been received and has not yet been rejected by the server.
     */
    public static final int SC_CONTINUE = 100;

    /**
     * Status code (405) indicating the method specified is not allowed for the resource.
     */
    public static final int SC_METHOD_NOT_ALLOWED = 405;

    /**
     * Status code (409) indicating that the request could not be completed due to a conflict with the current state of
     * the resource.
     */
    public static final int SC_CONFLICT = 409;

    /**
     * Status code (412) indicating the precondition given in one or more of the request-header fields evaluated to
     * false when it was tested on the server.
     */
    public static final int SC_PRECONDITION_FAILED = 412;

    /**
     * Status code (413) indicating the server is refusing to process a request because the request entity is larger
     * than the server is willing or able to process.
     */
    public static final int SC_REQUEST_TOO_LONG = 413;

    /**
     * Status code (415) indicating the server is refusing to service the request because the entity of the request is
     * in a format not supported by the requested resource for the requested method.
     */
    public static final int SC_UNSUPPORTED_MEDIA_TYPE = 415;

    // Extended WebDav status code --------------------------------------------

    /**
     * Status code (207) indicating that the response requires providing status for multiple independent operations.
     */
    public static final int SC_MULTI_STATUS = 207;

    // This one collides with HTTP 1.1
    // "207 Parital Update OK"

    /**
     * Status code (418) indicating the entity body submitted with the PATCH method was not understood by the resource.
     */
    public static final int SC_UNPROCESSABLE_ENTITY = 418;

    // This one collides with HTTP 1.1
    // "418 Reauthentication Required"

    /**
     * Status code (419) indicating that the resource does not have sufficient space to record the state of the resource
     * after the execution of this method.
     */
    public static final int SC_INSUFFICIENT_SPACE_ON_RESOURCE = 419;

    // This one collides with HTTP 1.1
    // "419 Proxy Reauthentication Required"

    /**
     * Status code (420) indicating the method was not executed on a particular resource within its scope because some
     * part of the method's execution failed causing the entire method to be aborted.
     */
    public static final int SC_METHOD_FAILURE = 420;

    /**
     * Status code (423) indicating the destination resource of a method is locked, and either the request did not
     * contain a valid Lock-Info header, or the Lock-Info header identifies a lock held by another principal.
     */
    public static final int SC_LOCKED = 423;

    /*
     * VirtualHosting header provided by reverse-proxies
     */
    public static final String X_FORWARDED_HOST = "x-forwarded-host";

    /*
     * VirtualHosting header specific to Nuxeo 5 EP
     */
    public static final String VH_HEADER = "nuxeo-virtual-host";

    // Constant utility class
    private WebConst() {
    }

}
